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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>练手一b</title>
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<body>
<form role="form">
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    <input  type="radio" value="red" name="change" id="one"/><label for="one"></label>
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<div class="navbar navbar-default">
  <ul class="nav navbar-nav">
    <li ><a href="#">新闻</a></li>
    <li ><a href="#">娱乐</a></li>
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